458 EXPERIMENT STATION RECORD. 



A brief report is given on tlie results obtained from the use of various pro- 

 prietary mixtures for pre\enting injuries to fruit trees by rodents. Brief ac- 

 counts are also presented of the habits of Arricola ratticcps and on nematodes, 

 woolly aphis, earwigs, and foul brood of bees. 



Report of committee on entomolog'y, H. A. Gossard (Ohio Deitt. Ayr., Dir, 

 Jlort. Bui. 1, />/>. od-61). — ^Mention is made of spraying experiments carried on 

 for the purpose of controlling the grape-berry moth. This moth caused the 

 destruction of about 50 per cent of the grape crop in infested localities. The 

 usual arsenicals were applied with good results. A brief account is also pre- 

 sented of spraying experiments for controlling codling motli and on the use of 

 proprietary insecticides. 



Some insect enemies of garden crops, 11. I. Smith (North Carolina tiia. Bui. 

 li)l, pp. 5-6Jf, figs. 38). — An account is given of the more common insect enemies 

 of garden crops. Emphasis is placed upon the Nfact that even in the home 

 garden success may depend upon the intelligent application of preventive and 

 remedial measures. Under each insect considered a brief description is given 

 of its life history and habits and of the particular remedial treatment necessary. 

 Formulas and directions for preparing spray mixtures are appended. 



The weeviling- of maize in West Africa, R. Newstead (Liverpool Univ., Inst. 

 Com. Research Trop. Quart. Jour., 2 (19011), No. J,, pp. 27'-.3/).— The beetles 

 chiefly concerned in the injuring of maize on the west coast of Africa are rice 

 weevil, granai-y weevil, and an undescribed species of Bruchus. The biology 

 and economic I'elations of rice weevil and granary weevil are described in some 

 detail. For the control of these pests fumigation with hydrocyanic-acid gas or 

 carbon bisulphid is recommended. 



Sugar-cane borer, A. Ferreyros (Bol. Min. Fomento [Peru'\, Dir. Fomento, 

 (I'JOS), No. 1, pp. 51-68). — The present status of the sugar-cane borer, par- 

 ticularly in Louisiana, is briefly outlined with notes on its habits and life history 

 and the amount of damage caused by It. Natural enemies assist to a slight 

 extent in controlling this pest. One of the most effective remedies is planting 

 the cane so deeply as to prevent the emergence of borers. 



The tobacco stem borer, H. M. Lefroy (Ayr. Jour. India, 3 (1908). No. 1. pp. 

 65-68, pi. 1). — Gnorimoschema heliopa, so far as has yet been determined, feeds 

 only upon cultivated and wild tobacco. The life history of the insect is de- 

 scribed in detail. Its attacks are most serious upon the better vax'ieties of 

 cultivated tobacco. In controlling the pest it is recommended that wild tobacco 

 in the A-icinity of tobacco fields be destroyed and that the larvte be cut out of 

 the swellings in the stems in which they live. 



The larvae of the cabbage butterfly, G. P.\oli (Bui. R. 8oc. Toscana Orl., 

 3. ser., 13 (1908), No. .',, pp. J 00-103, fiys. 5).— The life history of Pieris brassicw 

 is briefly described with particular reference to the injuries caused by the larv?e 

 of this species and the usual methods api)lied in controlling it. 



Plutella cruciferarum, H. M. Quanjer (Tijdsehr. Pluntcn.::iektcn, 12 (1906), 

 No. 1-3, pp. 62-10, pis. 2, fly. 1). — The habits and life history of the diamond- 

 back moth are described in some detail. In combating this pest satisfactory 

 results have been obtained from brushing the caterpillars from eabljage leaves 

 and immediately covering them in the soil with a shovel. The caterinllars may 

 also be dislodged by a spray of water. 



The blackberry leaf -miner, C. O. Houghton (Eat. News, 19 (1908), No. 5, 

 pp. 212-216). — tieolioncura eapitalis was observed injuring dewberries near 

 Dover, Delaware, in 190.5. and was found in considerable numbers during the 

 following year. This species was first described in 1867. A technical descrip- 

 tion of the insect is given together with notes on its distribution. The insect is 

 apparently parasitized by a species of Rhysipolis. 



